May. 26, 2025
When it comes to efficiently transporting slurry, the NM Medium Duty Slurry Pump is designed to meet the demands of various industrial applications. Slurry pumps are critical in sectors like mining, construction, and wastewater treatment, where they facilitate the movement of mixtures that contain solid particles suspended in liquid. The NM model is particularly suitable for medium-duty tasks, str
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Learn about the challenges involved with pumping heavier slurries and the top pumps used for heavy slurry applications.
EDDY Pump’s unique pump design originated in . Throughout the years the EDDY Pump has been put to the test in countless applications involving heavy slurry. Time and time the EDDY Pump has provided value greater than that of traditional pumps in heavy slurry applications. The large internal flow path enables the pump to pass extremely large solids, and the recessed rotor reduces the potential for wear due to the abrasive nature of heavy slurry. Added to this, the unique ability to provide a turbulent flow means that the operation of the EDDY Pump avoids allowing heavy slurry to settle at the bottom of the liquid path, which can decrease potential clogging issues internal to the pump.
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When pumping heavy slurries it is critical to maintain a constant flow through the pipeline, the flow of the material must flow at a specific rate given the type of slurry material that is being pumped. The specific velocity of flow can be measured in feet per second. The continued movement of the material through the pipeline assists with avoiding settling at the bottom portion of the piping. Applying the pump correctly requires pre-planning and determining what the critical flow rate must be given the heavy slurry material being pumped.
The critical flow rate is also defined as a flow that involves turbulence, or is described as turbulent, not laminar. In this regard, critical flow rate is relational to the specific velocity of the fluid that achieves a turbulent flow. This turbulence of the fluid is important to avoid settling of the material in the pipeline. Critical velocity changes due to the density and coefficient viscosity of the fluid. Although determining critical velocity of a heavy slurry is beyond the scope of this article, it is important to note that the EDDY Pump is designed to produce a turbulent flow due to the unique design of the rotor. Traditional pumps in slurry applications, such as centrifugal pumps, produce a laminar flow which is counterproductive and one reason they are not as well suited for heavy slurry applications as an EDDY Pump.
To avoid selecting and misapplying the wrong pump for a heavy slurry application, there are some important considerations that must be adhered to.
A slurry pump is a specialized type of centrifugal pump designed to handle highly abrasive, high-density slurries that contain solid particles. These pumps are essential in industries such as mining, dredging, construction, and wastewater treatment, where they manage extreme conditions and demanding tasks. Unlike standard centrifugal pumps, slurry pumps are built to ensure reliable performance and avoid clogging, even when dealing with the toughest slurry pumping applications. Their robust design, as well as that of submersible slurry pumps, allows them to efficiently transport solid particles mixed with liquids, making them indispensable in various industrial processes.
Slurries are complex mixtures of solids and liquids, with the liquid acting as the transport mechanism for the solid particles. The size of these particles can vary significantly, from as small as one micron to several hundred millimeters in diameter. This variation in particle size can greatly impact a pump’s ability to move the slurry through a process line. Understanding slurry properties is crucial for selecting the right pump, as these mixtures share five essential characteristics: they consist of solids and liquids, rely on a liquid transport mechanism, contain solid particles, have varying particle sizes, and are utilized across multiple industries.
To avoid selecting and misapplying the wrong pump for a heavy slurry application, there are some important considerations that must be adhered to.
Slurry pumps are typically larger and more powerful than standard pumps, designed to withstand the rigorous demands of pumping slurries. Depending on installation conditions and space available, consider either vertical slurry pumps or horizontal slurry pumps, either as centrifugal or positive displacement pumps. They feature more rugged bearings, mechanical seals, high efficiency impellers and shafts to handle the wear and tear associated with abrasive materials. The components that come into contact with the pumped medium are made from wear-resistant materials, such as metallic and elastomeric substances, chosen based on the specific application. This use of wear-resistant materials is crucial in reducing wear rates and extending the lifespan of the pump, ensuring superior performance in challenging slurry pumping applications.
With heavier materials, the motors driving the pump will be pulling much more power compared to move the same quantity of a lighter, less dense material. This requires a larger pump motor that can handle heavier materials without wearing down. The amount of power a pump requires is calculated from the pump’s discharge pressure, flow rate, and specific gravity of the material to be pumped. It is vital to verify that the power rating of the selected pump is higher than the calculated power required after considering reasonable variations in operating conditions.
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Slurry pumps can be powered hydraulically or electrically. While there are pros and cons to each type of motor, one motor may be preferable over another simply due to logistics. The motor needs to be matched for the pump and the application for optimal performance.
Slurry pumps are vital in a wide range of industries, including mining, dredging, construction, and wastewater treatment. Mining slurry pumps are particularly essential for the sector. Their robust design and ability to handle abrasive materials make them indispensable in these sectors. Additionally, slurry pumps are used in food, dairy, beverage processing, and biopharmaceutical manufacturing, where they efficiently manage mixtures of solids and liquids. The versatility and durability of slurry pumps ensure they meet the demanding needs of various industrial processes, providing reliable and efficient slurry pumping solutions.
The EDDY Pump is unique in comparison to other heavy slurry pumps on the market. The EDDY Pump is specifically designed for pumping abrasive slurries, utilizing a unique Tornado Motion to create strong suction and efficient transport of solid particles. Eddy Pump technology is based on the principle of Tornado Motion of liquid as a synchronized swirling column along the center of intake pipe that induces agitated mixing of solid particles with liquid, creating suction strong enough for solid particles to travel upwards into the volute and generating pressure differential for desired discharge. The eddy current is caused by the pressure differential generated by the rotor, and strengthened by turbulent flow patterns in the volute and suction tube. The EDDY Pump is also designed with an extremely large flow path that allows heavy slurries to flow through the pump without becoming clogged. The large flow through design also allows the passage of large solids that are almost the size of the inlet port of the pump.
Added to the many features and benefits of the EDDY Pump, the pump is available with the highest quality materials of construction to ensure the pump can withstand the extensive wear and abrasive characteristics of heavy slurries. Proven in countless heavy slurry applications, the EDDY Pump is the premier slurry pump available.
The EDDY Pump Corporation is a premier manufacturer of pumping and dredging equipment. If you are pumping or dredging slurry, high solids, extremely viscous material, paste, high abrasives (sand & gravel) and material filled with solids, then you found the best suited product for the job.
To extend the life of your slurry pump, it is essential to follow proper engineering and equipment selection practices, along with regular maintenance and inspection. Working with a qualified engineer to select the right pump for your application is crucial. Regular maintenance includes checking the pump’s discharge pressure, rotating impeller, and pump casing for signs of wear and tear. Additionally, inspecting the pump components, such as bearings and shafts, helps prevent premature wear and failure. By adhering to these guidelines and understanding the properties of slurries, slurry pump construction, and applications, you can ensure the reliable operation and prolonged lifespan of your slurry pump.
The EDDY Pump Corporation is a premier manufacturer of pumping and dredging equipment. If you are pumping or dredging slurry, high solids, extremely viscous material, paste, high abrasives (sand & gravel) and material filled with solids, then you found the best suited product for the job.
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If you need help with pump selection, sales or engineering support, call 619-404-.
This video shows how EDDY Pump transports high slurry and abrasive materials. Featured dredge pump equipment includes the Remote Operated Subdredge, Diver OperatedPump and a Excavator Attachment Dredge Pump.
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